Periodontal treatment is the specialist cleaning of your teeth and gums to help control the bacteria that cause gum disease. Gum disease is caused by the germs (bacteria) which live in your mouth. The bacteria stick to your teeth, irritate the gums and make them bleed.
(Redirected from Ground effect in aircraft) In fixed-wing aircraft, ground effect is the increased lift (force) and decreased aerodynamic drag that an aircraft's wings generate when they are close to a fixed surface. When landing, ground effect can give the pilot the feeling that the aircraft is floating.
1 Conclusion The ground reaction forces, as measured by a force platform, reflect the net vertical and shear forces acting on the surface of platform. 2  As such, they are an algebraic summation of the mass â acceleration products of all body segments while the foot is in contact with the platform.